diff --git a/soc/arm/st_stm32/stm32wba/Kconfig.defconfig.series b/soc/arm/st_stm32/stm32wba/Kconfig.defconfig.series
index e3dfeab2018..e6d57729a09 100644
--- a/soc/arm/st_stm32/stm32wba/Kconfig.defconfig.series
+++ b/soc/arm/st_stm32/stm32wba/Kconfig.defconfig.series
@@ -10,4 +10,7 @@ source "soc/arm/st_stm32/stm32wba/Kconfig.defconfig.stm32wba*"
 config SOC_SERIES
 	default "stm32wba"
 
+config STM32_LPTIM_TIMER
+	default y if PM
+
 endif # SOC_SERIES_STM32WBAX